java – 如何设置文本一个整数并获取int而不会收到错误

package kfc.project;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.EditText;
import android.widget.TextView;

public class productdetail extends Activity{

    @Override
    protected void onCreate(Bundle bundle) {
        super.onCreate(bundle);
        setContentView(R.layout.productdetail);
        //stuff to get intent
        Intent receivedIntent = getIntent();

        String productName = receivedIntent.getStringExtra("name");
        int productCalories = receivedIntent.getIntExtra("calories",0);

        Bundle extras = getIntent().getExtras();

        String name = extras.getString("name");

        if (name != null) {
            TextView text1 = (TextView) findViewById(R.id.servingsize);
            text1.setText(productName);

        }
        //int calories = extras.getInt("calories");

            TextView text1 = (TextView) findViewById(R.id.calories);
            text1.setText(productCalories);


    }

}